Your figures are accurate. Nov CL had the extra volume mainly in premarket, but since the open the rate is running almost the same with Nov CL having slightly more volume http://www.cmegroup.com/trading/energy/crude-oil/light-sweet-crude.html
lots of computer prbs no trades --- Day end Summary for: Monday, October 17, 2011 ---- (This is a paper account started with $20,000 on Monday Sep 26, 2011. I follow the margin rules for IB.I try to post my trades in advance when possible and with graphs. I am not reading the thread so if you wish to contact me please do so by PM.) Cash Balance today $14,880 Holding at the close 2 short contracts: 1 Dec at 84.53 @ 10:04 Thursday, October 13 1 Dec at 86.81 @ 13:10 Friday, October 14 avg = 85.67 Closing Price 86.60 -0.93 * 2,000 = -1,860 Open Equity = -$1,860 Closing Cash Balance $14,880 Net Equity $13,020